<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
<style>
    h1{
        color: cornflowerblue;
    }
    .ibm{
        background-color: cornflowerblue;
    }
    .icm{
        background-color: darkgray;
    }
    .text{
        color: green;
    }
</style>
</head>
<body>
    <div>1111</div>
    <h1>2222</h1>
    <div class="ibm text">33333</div>
    <div class="icm">44444</div>
    <div>55555</div>
    <div>66666</div>
</body>
</html>